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Product Specifications:
| Item | Check Valve |
| 3-a Compliance | Not Rated |
| Application | General Purpose |
| Body Material | Stainless Steel |
| Cap To Inlet Center | 1.406" |
| Check Mechanism | Swing |
| Connection Gender - Side 1 | Female |
| Connection Gender - Side 2 | Female |
| Connection Size - Side 1 | 1" |
| Connection Size - Side 2 | 1" |
| Connection Type | FNPT x FNPT |
| Connection Type - Side 1 | NPT |
| Connection Type - Side 2 | NPT |
| Cracking Pressure | 0.5 psi |
| Disc Material | Stainless Steel |
| Flow Coefficient | 21.62 |
| Flow Design | Single |
| For Media | Gas, Oil, Water |
| Grade | Grade 316 |
| Height - Cap To Inlet Center | 1 3/8" |
| Hex Size | 2" |
| Includes Counterweight | No Counterweight |
| Length | 3.266" |
| Max. Pressure (cwp) | 250 psi |
| Max. Steam Pressure | Not Rated |
| Max. Temp. | 302°F |
| Max. Water Pressure | 250 psi |
| Mechanism And Body Design | Inline Spring |
| Media Temperature Range | -4°F to +302°F |
| Mounting Orientation | Horizontal/Vertical |
| Nsf Certifications For Food And Drinking Water | NSF 61 |
| Operating Temperature - Maximum | 302°F |
| Operating Temperature - Minimum | -4°F |
| Overall Height | 2.094" |
| Overall Length | 3.27" |
| Pipe Size, Tube Size | 1" |
| Seal Material | FKM |
| Seat Material | FKM |
| Silent Check | Standard |
| Spring Material | Stainless Steel |
| Spring Material Grade | Grade 316 |
| Vacuum Service Rating | Not Rated |
| Valve Body Material Grade | Grade 316 |
| Valve Body Style | Inline |
| Valve Series | S250 Series |
| Valve Ways | 2-Way |
| Width | 1.812" |
Shipping Info:
| Ship weight (kg) | 0.18 |
| Ship height (cm) | 5.32 |
| Ship length (cm) | 8.29 |
| Ship width (cm) | 4.6 |
| Country of Origin | IT |
Product Variants
| Product | Model | Body Material | Connection Type | Seat Material | Cracking Pressure | Max. Water Pressure | Overall Height | Pipe Size, Tube Size | Max. Steam Pressure | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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S250-1 1/2 | Stainless Steel | FNPT x FNPT | FKM | 0.5 psi | 250 psi | 3.078" | 1 1/2" | Not Rated | €141.37 | |
![]() |
S250-11/4 | Stainless Steel | FNPT x FNPT | FKM | 0.5 psi | 250 psi | 2.438" | 1 1/4" | Not Rated | €111.87 | |
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S800-11/4 | Stainless Steel | FNPT x FNPT | PTFE | 0.5 psi | 800 psi | 2.469" | 1 1/4" | 125 psi WSP | €310.21 | |
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S800-1 | Stainless Steel | FNPT x FNPT | PTFE | 0.5 psi | 800 psi | 2 1/8" | 1" | 125 psi WSP | €176.82 | |
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S800-1/2 | Stainless Steel | FNPT x FNPT | PTFE | 0.5 psi | 800 psi | 1.344" | 1/2" | 125 psi WSP | €105.83 | |
![]() |
S250-1/2 | Stainless Steel | FNPT x FNPT | FKM | 0.5 psi | 250 psi | 1.266" | 1/2" | Not Rated | €65.92 | |
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S800-1/4 | Stainless Steel | FNPT x FNPT | PTFE | 0.5 psi | 800 psi | 1.344" | 1/4" | 125 psi WSP | €95.92 |
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BONOMI S250-1 Check Valve, Single Flow, Inline Spring, 316 Stainless Steel, 1 Inch Pipe/Tube Size, Viton
€83.91 /unit


